PROBLEM TO BE SOLVED: To provide a difference noise replacement device for highly precisely recognizing whether a difference type touch panel is touched or not by reducing any influence of a difference noise.;SOLUTION: A difference noise replacement device 100 is provided with: a difference noise comparison part 120 for determining whether a difference noise as a difference value related to a difference noise pixel is included in a predetermined range; and a difference noise replacement part 130 for, when it is determined that the difference noise is not included in the predetermined range by the difference noise comparison part 120, replacing the difference noise with a specific pixel value included in the predetermined range. Thus, the difference noise replacement device 100 highly precisely recognizes whether a difference type touch panel is touched or not by reducing any influence of the difference noise.;COPYRIGHT: (C)2011,JPO&INPIT
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